Riveting tool



F. A.BECKER AND A. P. ANDLAUER.

BIVETING TOOL.

l APPlflcATloN FILED DEc. 2. m2o.

Patented May 30, 1922.

@24U y @E H AuNrrED STATES PATENT OFFICE.

FRANK A.. BECKER AND ALBERT P. ANDLAUER, OF KANSAS? CITY, MISSOURI.

RIVETING TOOL.

1Specification of Letters Patent. Patented May 30, 1922.

Application led December 27, 1920. Serial No. 433,301.y

' Tool, of which the following is a description,

referring to the drawings which accompany this" specification.

The invention relates to a tool, usefulin the sheet metal trades for riveting operations,'the principal purpose of the invention being to provide a tool which in drawing a rivet through a ,plurality of thicknesses of sheet metal, serves to draw the metal under action of the composite rivet head, bucker up and tool in combination, which in effect countersinks the metal whereby the headY of the rivet lies in the plane of the outer sheet of metal in the combination and'when the shank of the rivet has been set on ythe reverse side, a smooth surface is obtained on the outer sheet in counter distinction to customary practice where the rivet head projects and remains as an obstruction, which in certain designs calling for flush surfaces 'would prove objectionable.

Sheet metal of light gauges is not susceptible of ordinary countersinking, with satisfactory results; in our invention, the

. countersinking removes nometal, but leaves al1 the metal depressed beneath the rivet head which servesV to better bind and make secure the riveted joint. f

In the drawings, Fig. 1 shows va side elevation of the rivet tool.` Fig. 2 is an end view of the tool looking in the direction of the arrow, Fig. 1. Fig. 3 is a sectional view taken' along the\line 3 3 Fig. 1. Fig. 4

vis a sectional view taken along the line 4-4 Fig. 1.y Fig. 5 shows two sheets with a regis- Y tering hole through same andfa rivet arranged to pass through the hole in the sheets to secure same when finally riveted together. Fig. 6 Ashows two sheets riveted together in the customary manner, showing the rivet head projecting beyond the plane of the outside sheet. Fig. 7 is a fragmentary sectional view of the operative end of ourtool,

ya rivet, a -bucker` up and two sheet metalsheets as lapped and arranged `for instance in tank wall or chute constructions and showing the countersunk draw obtained in practice. Fig. 8 shows a sect1onal`v1ew of the parts seen in ig. 7, when the rivet has been set. Fig. 9 is a fragmentary plan view showing'two lapped sheets, holes for rivets and a top flush view of a rivet head, similar to that disclosed in Fig. 8, looking in the direction of-the arrows. lSimilar numerals of reference indicate corresponding parts throughout the several figures of the drawings.

Referring to the drawings,'10 represents the body of the tool, the operative base is provided with a countersunk recess 11 in diameter equal \toV Orslightly in excess of the diameter and size of a rivet head 12 plus twice the thickness of the plural sheets of sheet metal 13, which it is desired to rivet j holes l16 and the bucker up 15 is positioned against the rivet head 12. The hole 14 of the tool is next sleeved on the shank 18 of the rivet, one or `more blows are then struck upon the head of thetool at 17. The head 'of the rivet then -forces the metal of the sheets 13 to draw as at 19 within the base recess 11 of the tool and in theI counter-- sunk manner disclosed inl Figs. 7, 8 and 9. The shank 18 of the rivet is then upsetas seen at 18X Fig. 8 which completes the rivetin operation.

Such modifications may be` employed as lie withinthe scope of the appendedI claim.

l Having thus fully described our invention what we now claim as newand desire to secure by Letters Patent is: y

A riveting tool, including a shank, a recess at one end of said shank in diameter equal to or slightly in excess of the diameter of a rivet head plus twice the thickness 'of a desired assemblage of sheejjJ metal and an inner hole concentric with and connecting to said recess.

FRANK A. BECKER. ,ALBERT P. ANDLAUER.

Witnesses: p v

CAMERON MCCRACKIN, E. J. FLINN. 

